278 lines
6.9 KiB
Go
278 lines
6.9 KiB
Go
package state
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import (
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"testing"
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"time"
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)
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func TestGraveyard_Lifecycle(t *testing.T) {
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g := NewGraveyard(nil)
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// Make a donor state store to steal its database, all prepared for
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// tombstones.
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s := testStateStore(t)
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// Create some tombstones.
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func() {
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tx := s.db.Txn(true)
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defer tx.Abort()
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if err := g.InsertTxn(tx, "foo/in/the/house", 2, nil); err != nil {
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t.Fatalf("err: %s", err)
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}
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if err := g.InsertTxn(tx, "foo/bar/baz", 5, nil); err != nil {
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t.Fatalf("err: %s", err)
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}
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if err := g.InsertTxn(tx, "foo/bar/zoo", 8, nil); err != nil {
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t.Fatalf("err: %s", err)
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}
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if err := g.InsertTxn(tx, "some/other/path", 9, nil); err != nil {
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t.Fatalf("err: %s", err)
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}
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tx.Commit()
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}()
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// Check some prefixes.
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func() {
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tx := s.db.Txn(false)
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defer tx.Abort()
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if idx, err := g.GetMaxIndexTxn(tx, "foo", nil); idx != 8 || err != nil {
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t.Fatalf("bad: %d (%s)", idx, err)
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}
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if idx, err := g.GetMaxIndexTxn(tx, "foo/in/the/house", nil); idx != 2 || err != nil {
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t.Fatalf("bad: %d (%s)", idx, err)
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}
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if idx, err := g.GetMaxIndexTxn(tx, "foo/bar/baz", nil); idx != 5 || err != nil {
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t.Fatalf("bad: %d (%s)", idx, err)
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}
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if idx, err := g.GetMaxIndexTxn(tx, "foo/bar/zoo", nil); idx != 8 || err != nil {
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t.Fatalf("bad: %d (%s)", idx, err)
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}
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if idx, err := g.GetMaxIndexTxn(tx, "some/other/path", nil); idx != 9 || err != nil {
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t.Fatalf("bad: %d (%s)", idx, err)
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}
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if idx, err := g.GetMaxIndexTxn(tx, "", nil); idx != 9 || err != nil {
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t.Fatalf("bad: %d (%s)", idx, err)
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}
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if idx, err := g.GetMaxIndexTxn(tx, "nope", nil); idx != 0 || err != nil {
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t.Fatalf("bad: %d (%s)", idx, err)
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}
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}()
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// Reap some tombstones.
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func() {
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tx := s.db.Txn(true)
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defer tx.Abort()
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if err := g.ReapTxn(tx, 6); err != nil {
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t.Fatalf("err: %s", err)
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}
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tx.Commit()
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}()
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// Check prefixes to see that the reap took effect at the right index.
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func() {
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tx := s.db.Txn(false)
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defer tx.Abort()
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if idx, err := g.GetMaxIndexTxn(tx, "foo", nil); idx != 8 || err != nil {
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t.Fatalf("bad: %d (%s)", idx, err)
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}
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if idx, err := g.GetMaxIndexTxn(tx, "foo/in/the/house", nil); idx != 0 || err != nil {
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t.Fatalf("bad: %d (%s)", idx, err)
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}
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if idx, err := g.GetMaxIndexTxn(tx, "foo/bar/baz", nil); idx != 0 || err != nil {
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t.Fatalf("bad: %d (%s)", idx, err)
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}
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if idx, err := g.GetMaxIndexTxn(tx, "foo/bar/zoo", nil); idx != 8 || err != nil {
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t.Fatalf("bad: %d (%s)", idx, err)
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}
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if idx, err := g.GetMaxIndexTxn(tx, "some/other/path", nil); idx != 9 || err != nil {
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t.Fatalf("bad: %d (%s)", idx, err)
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}
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if idx, err := g.GetMaxIndexTxn(tx, "", nil); idx != 9 || err != nil {
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t.Fatalf("bad: %d (%s)", idx, err)
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}
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if idx, err := g.GetMaxIndexTxn(tx, "nope", nil); idx != 0 || err != nil {
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t.Fatalf("bad: %d (%s)", idx, err)
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}
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}()
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}
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func TestGraveyard_GC_Trigger(t *testing.T) {
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// Set up a fast-expiring GC.
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ttl, granularity := 100*time.Millisecond, 20*time.Millisecond
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gc, err := NewTombstoneGC(ttl, granularity)
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if err != nil {
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t.Fatalf("err: %s", err)
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}
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// Make a new graveyard and assign the GC.
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g := NewGraveyard(gc)
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gc.SetEnabled(true)
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// Make sure there's nothing already expiring.
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if gc.PendingExpiration() {
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t.Fatalf("should not have any expiring items")
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}
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// Create a tombstone but abort the transaction, this should not trigger
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// GC.
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s := testStateStore(t)
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func() {
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tx := s.db.Txn(true)
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defer tx.Abort()
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if err := g.InsertTxn(tx, "foo/in/the/house", 2, nil); err != nil {
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t.Fatalf("err: %s", err)
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}
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}()
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// Make sure there's nothing already expiring.
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if gc.PendingExpiration() {
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t.Fatalf("should not have any expiring items")
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}
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// Now commit.
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func() {
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tx := s.db.Txn(true)
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defer tx.Abort()
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if err := g.InsertTxn(tx, "foo/in/the/house", 2, nil); err != nil {
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t.Fatalf("err: %s", err)
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}
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tx.Commit()
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}()
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// Make sure the GC got hinted.
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if !gc.PendingExpiration() {
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t.Fatalf("should have a pending expiration")
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}
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// Make sure the index looks good.
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select {
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case idx := <-gc.ExpireCh():
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if idx != 2 {
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t.Fatalf("bad index: %d", idx)
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}
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case <-time.After(2 * ttl):
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t.Fatalf("should have gotten an expire notice")
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}
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}
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func TestGraveyard_Snapshot_Restore(t *testing.T) {
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g := NewGraveyard(nil)
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// Make a donor state store to steal its database, all prepared for
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// tombstones.
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s := testStateStore(t)
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// Create some tombstones.
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func() {
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tx := s.db.Txn(true)
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defer tx.Abort()
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if err := g.InsertTxn(tx, "foo/in/the/house", 2, nil); err != nil {
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t.Fatalf("err: %s", err)
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}
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if err := g.InsertTxn(tx, "foo/bar/baz", 5, nil); err != nil {
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t.Fatalf("err: %s", err)
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}
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if err := g.InsertTxn(tx, "foo/bar/zoo", 8, nil); err != nil {
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t.Fatalf("err: %s", err)
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}
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if err := g.InsertTxn(tx, "some/other/path", 9, nil); err != nil {
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t.Fatalf("err: %s", err)
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}
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tx.Commit()
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}()
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// Verify the index was set correctly.
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if idx := s.maxIndex("tombstones"); idx != 9 {
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t.Fatalf("bad index: %d", idx)
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}
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// Dump them as if we are doing a snapshot.
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dump := func() []*Tombstone {
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tx := s.db.Txn(false)
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defer tx.Abort()
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iter, err := g.DumpTxn(tx)
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if err != nil {
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t.Fatalf("err: %s", err)
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}
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var dump []*Tombstone
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for ti := iter.Next(); ti != nil; ti = iter.Next() {
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dump = append(dump, ti.(*Tombstone))
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}
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return dump
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}()
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// Verify the dump, which should be ordered by key.
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expected := []*Tombstone{
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&Tombstone{Key: "foo/bar/baz", Index: 5},
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&Tombstone{Key: "foo/bar/zoo", Index: 8},
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&Tombstone{Key: "foo/in/the/house", Index: 2},
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&Tombstone{Key: "some/other/path", Index: 9},
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}
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if len(expected) != len(dump) {
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t.Fatalf("expected %d, got %d tombstones", len(expected), len(dump))
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}
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for i, e := range expected {
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if e.Key != dump[i].Key {
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t.Fatalf("expected key %s, got %s", e.Key, dump[i].Key)
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}
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if e.Index != dump[i].Index {
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t.Fatalf("expected key %s, got %s", e.Key, dump[i].Key)
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}
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}
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// Make another state store and restore from the dump.
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func() {
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s := testStateStore(t)
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func() {
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tx := s.db.Txn(true)
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defer tx.Abort()
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for _, stone := range dump {
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if err := g.RestoreTxn(tx, stone); err != nil {
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t.Fatalf("err: %s", err)
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}
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}
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tx.Commit()
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}()
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// Verify that the restore works.
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if idx := s.maxIndex("tombstones"); idx != 9 {
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t.Fatalf("bad index: %d", idx)
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}
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dump := func() []*Tombstone {
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tx := s.db.Txn(false)
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defer tx.Abort()
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iter, err := g.DumpTxn(tx)
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if err != nil {
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t.Fatalf("err: %s", err)
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}
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var dump []*Tombstone
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for ti := iter.Next(); ti != nil; ti = iter.Next() {
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dump = append(dump, ti.(*Tombstone))
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}
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return dump
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}()
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if len(expected) != len(dump) {
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t.Fatalf("expected %d, got %d tombstones", len(expected), len(dump))
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}
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for i, e := range expected {
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if e.Key != dump[i].Key {
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t.Fatalf("expected key %s, got %s", e.Key, dump[i].Key)
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}
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if e.Index != dump[i].Index {
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t.Fatalf("expected idx %d, got %d", e.Index, dump[i].Index)
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}
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}
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}()
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}
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